spring容器启动时注入的applicationContext,在普通的类中获取时为null

[cqchtm]

package com.quartz;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
* 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候中取出ApplicaitonContext.
*
*/
public class SpringUtils implements ApplicationContextAware {
private static ApplicationContext applicationContext;

/**
* 实现ApplicationContextAware接口的context注入函数, 将其存入静态变量.
*/
public void setApplicationContext(ApplicationContext applicationContext) {
SpringUtils.applicationContext = applicationContext;
}

/**
* 取得存储在静态变量中的ApplicationContext.
*/
public static ApplicationContext getApplicationContext() {
checkApplicationContext();
return applicationContext;
}

/**
* 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
@SuppressWarnings("unchecked")
public static <T> T getBean(String name) {
checkApplicationContext();
return (T) applicationContext.getBean(name);
}

/**
* 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
@SuppressWarnings("unchecked")
public static <T> T getBean(Class<T> clazz) {
checkApplicationContext();
return (T) applicationContext.getBeansOfType(clazz);
}

/**
* 清除applicationContext静态变量.
*/
public static void cleanApplicationContext() {
applicationContext = null;
}

private static void checkApplicationContext() {
if (applicationContext == null) {
throw new IllegalStateException(
"applicaitonContext未注入,请在applicationContext.xml中定义SpringUtils");
}
}

}



<xml文件===========================>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<!-- 扫描包 -->
<context:component-scan base-package="com.*" />

<!-- 导入资源文件 -->
<context:property-placeholder location="classpath:db.properties" />

<!-- 定义ViewResolver视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

<!-- 配置 dbcp 数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="username" value="${user}"></property>
<property name="password" value="${password}"></property>
<property name="url" value="${url}"></property>
<property name="driverClassName" value="${driver}"></property>
<property name="initialSize" value="${initPoolSize}"></property>
<property name="maxIdle" value="${maxPoolSize}"></property>
</bean>

<!-- 配置 Spirng 的 JdbcTemplate -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 配置事务属性 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 根据方法名指定事务的属性 -->
<tx:method name="purchase" propagation="REQUIRES_NEW" />
<tx:method name="get*" read-only="true" />
<tx:method name="find*" read-only="true" />
<tx:method name="*" />
</tx:attributes>
</tx:advice>

<!-- 配置事务切入点, 以及把事务切入点和事务属性关联起来 -->
<aop:config>
<aop:pointcut expression="execution(* com..*.*(..))" id="txPointCut" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut" />
</aop:config>

<!-- 配置拦截器 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean class="com.spring.MyInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>

<bean id="schedulerFactoryBean"
class="org.springframework.scheduling.quartz.SchedulerFactoryBean" />
<bean class="com.quartz.SpringUtils"/>

</beans>

[tony4geek]

这个是spring 的类，spring 加载完成了？

[tony4geek]

ContextLoaderListener

@Override
	public void contextInitialized ( ServletContextEvent sce )
	{
		
		 
		super.contextInitialized(sce);
		 (WebApplicationContext) sce.getServletContext().
				getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE));
		 
	}

http://blog.csdn.net/superdog007/article/details/43482427

[键圣]

我使用的是ClassPathXmlApplicationContext容器 可以获取到